Cutter head and knife for cutting sheet material

Details Cutter head and knife for cutting sheet material Cutter head and knife for cutting sheet material

1986-05-08

1989-06-27

Schran, Donald R.

Cutting

With tool sharpener or smoother

Spatially fixed tool

83747, 83761, 83628, 83697, 83925CC, B26D 712, B26D 500

Patent

active

048418226

ABSTRACT:
A cutting head for cutting spread sheet material and using a vertically reciprocating knife achieves a light-weight, low cost, low maintenance and high stroking speed design through a unique combination and arrangement of parts wherein the knife drive motor is isolated from rotation with the knife about the theta axis without using a conventional swivel mechanism. The knife has a leaf spring portion directly connected to the eccentric member, fatigue failure of the leaf spring portion of the blade is inhibited by antivibration stops and by a varying cross-section, a simple sharpener mechanism sharpens the blade on either one or both side faces, and a roller guide restrains the lower portion of the blade to the vertical axis with minimum frictional loss.

REFERENCES:
patent: 2534001 (1950-12-01), Couse
patent: 3548699 (1970-12-01), Gerber
patent: 3955458 (1976-05-01), Pearl
patent: 4033214 (1977-07-01), Pearl
patent: 4133235 (1979-01-01), Gerber
patent: 4667553 (1987-05-01), Gerber et al.

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